Finally, a solar lamp durchhällt the more than 8 hours !!! Here not too much is promised. If during the day the sun is shining, then the battery is very well loaded and is keeping the promised 12 hours effortlessly. Had now a day with no sunshine (it is the end of October), yet the batteries have been loaded. Although the service life was only about 10 hours, the last hour only moderate light, but you can be satisfied. I can totally recommend these bulbs.